炼油废水处理耐冲击负荷及生物强化中试研究
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摘要
为对炼油污水生化处理装置进行达标升级,研究建立了1套处理量为120 m~3/d的A/O工艺中试装置,对装置的耐冲击负荷性能进行探讨。结果表明,相比传统活性污泥工艺,A/O工艺在长期持续性冲击负荷期间表现出更强的耐受性,COD和NH_4~+-N达标率分别为81.2%和100%,可使现行工艺设备改造后达到GB 31570-2015要求。当遇到超高含量污染物冲击负荷时,采用1种高效、廉价的生物强化方法,在72 h内出水NH_4~+-N的质量浓度由13 mg/L稳定降至2 mg/L以下,污泥容积指数由240 m L/g降至160 m L/g,从而使原本受到冲击的生物处理系统快速恢复正常。
In order to upgrading the refinery wastewater treatment plant, a pilot scale plant of A/O process with influent volume of 120 m3/d was built, and the resistance to shock loading of the deive was discussed. The results indicated that during the persistent shock load, the A/O process exhibited a better resistance than the traditional process, in which the COD and NH4+-N attainment rate was 81.2% and 100% respectively, the active process equipment could reach the requirement of GB 31570-2015 after upgrading. When encountering the ultra-high content pollutants loading shock, an efficient and inexpensive biological enhancement method had been utilized to make the biological treatment system quickly restored to normal. In 72 h, the mass concentration of NH4+-N of effluent was decreased from 13 mg/L to below 2 mg/L, and the SVI was decreased from 240 mL/g to 160 mL/g.
In order to upgrading the refinery wastewater treatment plant, a pilot scale plant of A/O process with influent volume of 120 m3/d was built, and the resistance to shock loading of the deive was discussed. The results indicated that during the persistent shock load, the A/O process exhibited a better resistance than the traditional process, in which the COD and NH4+-N attainment rate was 81.2% and 100% respectively, the active process equipment could reach the requirement of GB 31570-2015 after upgrading. When encountering the ultra-high content pollutants loading shock, an efficient and inexpensive biological enhancement method had been utilized to make the biological treatment system quickly restored to normal. In 72 h, the mass concentration of NH4+-N of effluent was decreased from 13 mg/L to below 2 mg/L, and the SVI was decreased from 240 mL/g to 160 mL/g.
引文
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[2]石油炼制工业污染物排放标准:GB 31570-2015[S].
[3]赵杉林.石油石化废水处理技术及工程实例[M].北京:中国石化出版社,2013.
[4]张子臣,李树超.石化污水处理升级达标现场试验研究[J].化工设计通讯,2016,42(3):218-220.
[5]林亮,黄瑞敏,刘洋.生物制剂在污水处理厂升级改造中的应用[J].水处理技术,2013,39(4):131-134.
[6]MARTINS A M, PAGILLA K, HEIJNEN J J, et al. Filamentous bulking sludge-a critical review[J].Water Research,2004,38(4):793-817.
[7]RAMI魱REZ G W, ALONSO J L, VILLANUEVA A, et al. A rapid,direct method for assessing chlorine effect on filamentous bacteria in activated sludge[J].Water Research,2000,34(15):3894-3898.
[8]CHUTANI P, SHARMA K K. Biochemical evaluation of xylanases from various filamentous fungi and their application for the deinking of ozone treated newspaper pulp[J].Carbohydrate Polymers,2015,127:54-63.
[9]CARAVELLI A, GIANNUZZI L, ZARITZKY N. Effect of chlorine on filamentous microorganisms present in activated sludge as evaluated by respirometry and INT-dehydrogenase activity[J].Water Research,2004,38(9):2394.
[10]SIRIANUNTAPIBOON S, MANOONPONG K. Application of granular activated carbon-sequencing batch reactor(GAC-SBR)system for treating wastewater from slaughterhouse[J].Thammasat Int J Sc Tech,2001,6(1):16-25.
[11]WEI D, XUE X, CHEN S, et al. Enhanced aerobic granulation and nitrogen removal by the addition of zeolite powder in a sequencing batch reactor[J].Applied Microbiology&Biotechnology,2013,97(20):9235-9243.
[12]HEAD M A, OLESZKIEWICZ J A. Bioaugmentation for nitrification at cold temperatures[J].Water Research,2004,38(3):523.
[13]BOON N, TOP E M, VERSTRAETE W, et al. Bioaugmentation as a tool to protect the structure and function of an activated-sludge microbial community against a 3-chloroaniline shock load[J].Applied&Environmental Microbiology,2003,69(3):1511-1520.
[14]KISHIDA N, KIM J, TSUNEDA S, et al. Anaerobic/oxic/anoxic granular sludge process as an effective nutrient removal process utilizing denitrifying polyphosphate-accumulating organisms[J].Water Research,2006,40(12):2303-2310.
[15]冯培松.活化条件对煤质活性炭比表面积、孔容的影响[J].贵州化工,2008,33(6):3-4.
[16]MURAT S, INSEL G, ARTAN N, et al. Performance evaluation of SBR treatment for nitrogen removal from tannery wastewater[J].Water Science&Technology A Journal of the International Association on Water Pollution Research,2006,53(12):275-284.